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The Research and Development group at Rochester Precision Optics LLC (RPO) is conducting a years-long survey of the optical properties of glasses in the Ge-As-Se family. The goal of this survey is to find compositions in this ternary space that are more appropriately suited to demanding DoD and advanced R&D needs. This talk will focus only on the As-Se binary tie line of the full family but will illustrate glass compositions and measurements never before achieved even in this simple system. In particular, the refractive index of each composition is measured using a minimum deviation system from 850 nm to 14 μm. By parameterizing the fits of these dispersion curves, we achieve a deterministic model for designing custom compositions over this tie line. We also discuss the completely novel As80Se20 glass, who’s properties have not been previously reported in literature.
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J. David Musgraves, Arie Beckens, Peter Wachtel, John Deegan, "Optical properties of some novel chalcogenide glasses," Proc. SPIE 11889, Optifab 2021, 118890N (28 October 2021); https://doi.org/10.1117/12.2602832